Improvement in locomotive-engines



WM. S. G. BAKER, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN LOCOMOTIVE-ENG'INES.

Specification forming part of Letters Patent No. 59, 340, dated November 6, 1866.

To all whom it may concern:

Be it known that 1, WM. S. G. BAKER, of Baltimore, in the county of Baltimore and State of Maryland, have invented a new and Improved Mode of OonstructingBed-Plat-e and Steam-Chest Combined for Locomotive-Engines and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specification, in which Figure 1 represents a cross-section on A and O D of Fig. 2, showing steam-chestformed in bed-plate. Fig. 2 is an end view of Fig. 1. Fig. 3 is the plan View of same.

This invention consists in arranging the castiron bed-plates of locomotive-engines in such a manner that the steam-chest is formed in it, being part of the same, thereby enabling you to dispense with the rocker-shaft, if desired, and the extra castings and fittings for a separate steam-chest, as usually made and adapted, bringing all the steam-connections nearer the supply and shortening the exhaust-pipes, by which the temperature of the steam is not so liable to be reduced, making less steam-joints in the connections and a simplified valve-gear, making it wholly or in part direct-acting.

To enable those skilled in the art to fully understand, make, and use my invention, I will proceed to describe its construction and operation.

The letters D in the several views represent the steam-chest form ed within thebed-plate G, which may be made halflconnected to either cylinder, or separate. The openings or steamports 0 O and exhaust-port B are formed in the bed-plate G, opening into the steam-chest D and into cylinder J, and into smoke-box H at discharge-openin g I, formed in bed-plate G,

and connected to supply-boiler through opening E,formed in top of bed-plate G, which forms the upper or top of steam-chest D.

The whole is so arranged that, the steamchest D being formed within the bed-plate G, you reduce the length of the exhaust-openings B and I, and the steam-supply pipe connecting with steam-chestD, formed within bed-plate G, at opening E,-rcducing the liability of the steam becoming reduced in temperature by passing through a greater length of pipe,asis the case in steam-chests as now made in outside-connected locomotive-engines, and reducing the number of steam-joints in your chest, making but one steam-joint .,M, formed between lid K and flange G, formed on bed-plate G. You can also dispense with the extra castings to form steam-chest, and the use of the rocker shaft to connect your valve-stem with the. valve link or hook, thereby reducing the number of wearing points, and allowing the links to be suspended from both sides; also the steamchest, cylinders, and bed-plate to be fitted together, ready to be attached to the frames, making the bed-plate and cylinders a guide to set the frames, and making a simple and sure cylinder-fastening.

WhatI claim as new, and desire to secure by Letters Patent, is-

The steam-chest D, exhaust'openings B I, and steam-ports O 0, formed within the bedplate G, in connection with cylinders of locomotive-engines, in such a manner that 'the steam-supply and exhaust-discharge pipes are shortened and number of steamjoints reduced, substantially as and for the purpose specified.

WM. S. G. BAKER. 

